All varieties of quartz and chalcedony

There are hundreds of variety names for Quartz and Chalcedony. Many, such as Amethyst and Rose Quartz, are universally accepted and used, others are sometimes used, and yet others are hardly ever seen or made up. New variety names flood the market every year, as dealers and individuals make up their own variety names.
Included in this list are all variety names beside for names that are virtually unheard of.

Many varieties, such as Amethyst and Agate, have varieties of their own. These variety names are not found on this list, but in the page of the variety they are of. For example, Snakeskin Agate will not be found on this list, but on the Agate page.
Below is a list of varieties that have their own varieties:

Variety	Description	Image
Agate	Banded variety of Chalcedony. Agate occurs in every possible color and shape More information on Agate
Agate Jasper	Synonym of Jasp-agate
Agatized Wood	Wood that has been replaced by banded Chalcedony. See Petrified Wood.
Amberine	Yellow to yellow-green Chalcedony found in Death Valley, California.
Amethyst	Purple variety of Quartz. More information on Amethyst
Amethyst Quartz	A mixture of Amethyst and Milky Quartz. It is partially purple and partially white.
Ametrine	Mixture of Amethyst and Citrine. It is partially purple and partially orange-yellow, with the color zones often sharply divided.
Apricotine	Reddish-yellow, apricot-colored waterworn Quartz pebbles from Cape May, New Jersey.
Arkansas Candle	Cluster of clear Quartz crystals ("Rock Crystal") from Arkansas in which the crystals are about six times as long as they are thick.
Aventurine	Translucent to opaque, massive Quartz containing small inclusions of one of several shiny minerals, which give the stone a a glistening effect. Aventurine is usually green, but may also be orange, brown, or yellow. More information on Aventurine
Aventurine Quartz	Synonym of Aventurine. This term sometimes used to distinguish it from Aventurine Feldspar (Sunstone).
Beta Quartz	See Polymorphs of Quartz
Binghamite	Quartz with dense, parallel inclusions of Goethite. Its color is yellowish to reddish, and it exhibits chatoyancy. Binghamite is found in the Cuyuna Iron Range in Minnesota, and is sometimes used as a gem. If the Goethite inclusions are not parallel, but disordered, the stone is known as Silkstone.
Blood Jasper	Synonym of Bloodstone
Bloodstone	Dark green to greenish blue variety of Chalcedony dotted with small, red, blood-like spots. (This term is also used to describe compact, amorphous Hematite.)
Blue Jasper	Synonym of Bloodstone
Blue Quartz	Dark blue, opaque, massive Quartz. Also known as Siderite, which is a totally improper term, since Siderite itself is a separate mineral. This term may also refer to Blue Rock Crystal.
Blue Rock Crystal	Rock Crystal synthetically tinted light blue through irradiation of gold.
Cairngorm	Term used in Scotland for Smoky Quartz. May also refer to waterworn pebbles of Smoky Quartz.
Cape May Diamond	Transparent, waterworn, Quartz pebbles found on the shores of Cape May, New Jersey.
Carnelian	Reddish, transparent to translucent variety of Chalcedony. More information on Carnelian
Carnelian Onyx	Agate composed of red and white banding lines. A type of Sardonyx.
Catalininte	Waterworn Quartz pebbles found on the beaches of Santa Catalina Island, off the coast of California.
Cat's Eye Quartz	Compact Quartz with fine parallel needles of any fibrous mineral. When polished, Cat's Eye Quartz exhibits cat's eye effect (effect of a thin light streak running from one end of the mineral to the other).
Chalcedony	The term "Chalcedony" scientifically refers to any type of microcrystalline Quartz. However, the term is generally used only to describe white or lightly colored, nodular or massive Chalcedony. All other types of Chalcedony are classified by their respective variety name.
Chalcedony Geode	Geode containing microcrystalline Quartz, forming mammilary blobs inside the geode.
Chalcedony pseudomorph after Coral	Chalcedony that formed a pseudomorph after coral. It is found in the Tampa Bay, Florida.
Chert	Rock composed of microcrystalline Quartz (Chalcedony), with remains of micro-organisms. It is an impure type of Flint. Chert also refers to any Jasper lacking an interesting pattern or color.
Chrysocolla Quartz	Quartz with bluish-green inclusions of Chrysocolla.
Chrysoprase	Apple green variety of Chalcedony.
Citrine	Yellow, orange, orange-brown, or reddish-brown variety of Quartz. More information on Citrine
Citrine Quartz	Synonym of Citrine
Colorado Diamond	Smoky Quartz from the Pikes Peak area in Colorado.
Common Chalcedony	White or lightly colored, nodular or massive Chalcedony.
Cornelian	British spelling of Carnelian
Crocidolite Quartz	Synonym of Tiger's Eye
Dendritic Agate	Chalcedony with tree-like or fern-like inclusions. Although the dendritic pattern appears as a fossilized plant, it is really inorganic manganese oxide. Dendritic Agate is not a true Agate, for it is not banded.
Dumortierite Quartz	Massive opaque Quartz colored blue by intergrown Dumortierite crystals.
Eden Valley Wood	Petrified Wood from the Eden Valley (Sweetwater Co.) in Wyoming. The material from this locality is exceptional. It creates perfect casts of thin twigs and branched it silicafied over.
Falcon's Eye	Synonym of Hawk's Eye
Ferruginous Quartz	Quartz with an opaque reddish brown Hematite coating. See also Iridescent Quartz.
Flash Rock	White, opaque, rounded Quartz. Two stones are rubbed together in a dark room for the triboluminescence to be seen. (The effect of triboluminescence is present on all types of Quartz, and is not limited to "Flash Rock")
Flint	Massive, uniformly colored variety of Chalcedony that is somewhat impure. More information on Flint
Fossilized Wood	Synonym of Petrified Wood
Geode	Hollow rock filled with crystals. Most geodes are filled with crystalline Quartz, and some are filled with Chalcedony. Virtually all geodes have a layer of Agate surrounding the crystalline Quartz inside the geode. More information on Geodes
Gold Quartz	Synonym of Picture Rock
Green Onyx	May refer to Chalcedony dyed a deep green color, and may also refer to an Agate banded light green and white.
Green Quartz	Synonym of Prase
Hawk's Eye	Quartz with parallel, fibrous inclusions of Crocidolite. Hawk's Eye appears similar to Tiger's Eye, having a silky luster and exhibiting chatoyancy, and it also occurs together with it. However, it differs in that Tiger's Eye is a pseudomorph of Quartz after Crocidolite, whereas Hawk's Eye is Quartz with inclusions of Crocidolite.
Haytorite	Quartz pseudomorph after Datolite.
Heliotrope	Synonym of Bloodstone. May also incorrectly refer to a purplish type of Opal.
Hematite Quartz	Synonym of Ferruginous Quartz
Herkimer Diamond	Lustrous, clear, doubly terminated Quartz crystals from Herkimer Co., New York. Occasionally also dubbed "Middleville Diamonds" or "Little Falls Diamonds".
Holly Blue	Translucent, violet-blue variety of Chalcedony. It is sometimes banded.
Hornstone	Synonym of Chert or Jasper
Iridescent Quartz	Quartz with an iridescent coating of Hematite. See also Ferruginous Quartz.
Iris Quartz	Clear Quartz crystals with small internal flaws that cause an iridescent effect.
Japanese Law Twin	Synonym of Japanese Twin
Japanese Twin	Twinned Quartz crystals that join at an angle of 90º by their base.
Jasp-agate	Banded mixture of reddish or yellowish Jasper and colorless or white Chalcedony. There is more Jasper in the stone than there is Chalcedony. Since Jasp-agate is banded, it is classified as an Agate.
Jasper	Opaque variety of Chalcedony occurring in all colors. More information on Jasper
Jasperine	See Jasper
Jasponyx	Opaque type of Onyx with the layers composed of Jasper.
Landscape Agate	Synonym of Scenic Agate
Midge Stone	Synonym of Moss Agate
Milky Quartz	White, translucent to opaque variety of Quartz.
Mirabeu Diamond	Lustrous, clear, doubly terminated Quartz crystal from Mirabeu, France.
Morion	Opaque variety of black Quartz. Type of Smoky Quartz.
Mosquito Agate	Moss Agate in which the inclusions resemble a cluster of mosquitoes.
Moss Agate	Chalcedony with inclusions of Hornblende. The inclusions are dendritic and green, and may form interesting patterns.
Moss Jasper	Synonym of Moss Agate. This term may also be used to describe a certain type of petrified wood.
Myrickite	Chalcedony with red bands of Cinnabar found in Death Valley, California.
Niccolo	Onyx used for engravings
Novaculite	Massive white Quartz used to make whetstones for sharpening knives, razors, and steel tools.
Onegite	Light purple variety of Chalcedony with inclusions; found in Lake Onega (near Leningrad) Russia.
Onice	Old term once used for Onyx
Onyx	Type of Agate where the banding lines are straight and parallel, and consistent in band size. More information on Onyx
Petrified Wood	Wood that was chemically replaced by a mineral substance. More information on Petrified Wood
Phantom Quartz	Quartz crystal with a phantom growth.
Picture Rock	White Quartz streaked with Gold veins.
Plasma	Dark green variety of Chalcedony. It often contains white or yellow spots.
Prase	Light to emerald green, transparent to translucent Quartz, with coloring caused from inclusions of green minerals, such as Actinolite, Hedenbergite, Chlorite, or Malachite. Prase usually occurs in massive form, but may also be crystallized.
Praseme	Light green, translucent Quartz with Hedenbergite inclusions found in Serifos, Greece.
Prasiolite	Olive green, transparent variety of Quartz. Prasiolite does not occur naturally. It is produced by heating Amethyst or Citrine from certain Brazilian localities. Prasiolite may also be spelled Praziolite.
Quartz Cat's Eye	Synonym of Cat's Eye Quartz
Quartz Diamond	Synonym of Rock Crystal
Quartz Geode	Geode filled with crystalline Quartz.
Rainbow Quartz	Synonym of Iris Quartz
Rock Crystal	Colorless, transparent, well-crystallized variety of Quartz.
Rose Quartz	Pink variety of Quartz. More information on Rose Quartz
Rutilated Quartz	Quartz with golden-yellow, needlelike Rutile inclusions.
Sagenite	Synonym of Rutilated Quartz. May also refer to a specific type of Rutilated Quartz where the Rutile needles bisect at an angle near 60°.
Sagenitic Quartz	Quartz containing inclusions of any needle-like mineral.
Sapphire Quartz	Synonym of Blue Quartz
Sard	Brownish to brownish-red, transparent to translucent variety of Chalcedony. More information on Sard
Sardoine	Synonym of Sard
Sardonyx	Variety of Agate with straight parallel bands of brownish to red alternating with white or black bands. More information on Sardonyx
Scenic Agate	Dendritic Agate with interesting designs resembling scenery.
Scepter Quartz	Quartz crystal with a scepter growth.
Scotch Pebble	Any of several forms of Quartz.
Silicified Coral	Quartz or Chalcedony pseudomorph after coral. Synonym of Chalcedony pseudomorph after coral.
Silicified Wood	See Petrified Wood
Silkstone	Quartz with dense inclusions of Goethite. The inclusions are not parallel, but in a disordered pattern. If the inclusions are parallel, the mineral is called Binghamite.
Sinopal	A reddish form of Aventurine
Smoky Quartz	Black or dark brown variety of Quartz.
Star Quartz	Quartz displaying asterism. May be of colorless Quartz or Rose Quartz.
Tigereye	Synonym of Tiger's Eye
Tiger's Eye	Pseudomorph of Quartz after fibrous Crocidolite. More information on Tiger's Eye
Tourmalinated Quartz	Quartz with splintery Tourmaline inclusions.
Venus Hair Quartz	Rutilated Quartz in a crystallized form.
Vermarine	Synonym of Prasiolite
Wascoite	Chalcedony from Wasco Co., Oregon, with irregular yellow, pink, and red concentric bands.